hardhat.config.js

require("@nomiclabs/hardhat-waffle");
require('dotenv').config();
require("@nomiclabs/hardhat-etherscan");
require("hardhat-dependency-compiler");
require("@nomiclabs/hardhat-web3");

// This is a sample Hardhat task. To learn how to create your own go to
// https://hardhat.org/guides/create-task.html

const INFURA_API_KEY = process.env.INFURA_API_KEY || "";
const KOVAN_PRIVATE_KEY = process.env.KOVAN_PRIVATE_KEY || "";
const RINKEBY_PRIVATE_KEY = process.env.RINKEBY_PRIVATE_KEY || "";
const BSC_PRIVATE_KEY = process.env.BSC_PRIVATE_KEY || "";
const MAINNET_PRIVATE_KEY = process.env.MAINNET_PRIVATE_KEY || "";
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY || "";

task("accounts", "Prints the list of accounts", async () => {
  const accounts = await ethers.getSigners();

  for (const account of accounts) {
    console.log(account.address);
  }
});

// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more

/**
 * @type import('hardhat/config').HardhatUserConfig
 */
module.exports = {
  solidity: {
    compilers: [
      {
        version: "0.8.0"
      },
      {
        version: "0.8.4",
        settings: {
          optimizer: {
            enabled: true,
            runs: 200
          }
        }
      },
      {
        version: "0.5.16"
      }
    ]
  },
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
    },
    /**
    hardhatFork: {
      forking: {
        url: `https://mainnet.infura.io/v3/${INFURA_API_KEY}`
      },
      gasPrice: 0,
      accounts: [
        {
          privateKey: MAINNET_PRIVATE_KEY, balance: "10000000000000000000000",
        },
        {
          privateKey: MAINNET_PRIVATE_KEY_2, balance: "10000000000000000000000",
        },
        {
          privateKey: MAINNET_PRIVATE_KEY_3, balance: "10000000000000000000000",
        }
      ]
    },
     **/
    kovan: {
      url: `https://kovan.infura.io/v3/${INFURA_API_KEY}`,
      accounts: [KOVAN_PRIVATE_KEY]
    },
    mainnet: {
      url: `https://mainnet.infura.io/v3/${INFURA_API_KEY}`,
      accounts: [MAINNET_PRIVATE_KEY]
    },
    rinkeby: {
      url: `https://rinkeby.infura.io/v3/${INFURA_API_KEY}`,
      accounts: [RINKEBY_PRIVATE_KEY]
    },
    BSCTest: {
      url: 'https://data-seed-prebsc-1-s1.binance.org:8545/',
      accounts: [KOVAN_PRIVATE_KEY]
    },
    BSC: {
      url: 'https://bsc-dataseed.binance.org/',
      accounts: BSC_PRIVATE_KEY ? [BSC_PRIVATE_KEY] : []
    },
  },
  etherscan: {
    //@ts-ignore
    url: "https://api-rinkeby.etherscan.io/api",
    apiKey: ETHERSCAN_API_KEY
  },
  dependencyCompiler: {
    paths: [
      '@openzeppelin/contracts/token/ERC20/presets/ERC20PresetMinterPauser.sol',
    ],
  }
};